Established in 2008, Shenzhen Colour stone industrial Co., Limited is one of China's supplyers for 3d printing pens. With years of effort on quality and marketing, our sales networks has expanded to Europe, Australia, Southeast Asia, the Middle East,Africa and US and South America, almost all over of the world.Meanwhile, as a youthful company we have so many works need to do them well. On the end of the 2008, we built our QC-Repairing team, and control every step very strictly. We will make 12 months long term warranty for the pens and we also accept to extend the warranty time for additional.Good skillful staff with energy will make the order faster and safty. Good quality will earn more business is our final aim. Meanwhile best quality will bring more confidence for customer and our sales, No bad news is good news. Efficiency become very inportant in our daily work.